Sydney had brought up Vincent to establish that she was still in control of the situation, in the way that she was now establishing that she was over it. She was going to move on from the animosity between them regarding Vincent, and if that meant acknowledging that Sienna still had a relationship with him, then so be it. She just wanted to do things on her terms, so she wasn't really prepared for Jane pressing further. Luckily, Sienna remained fairly tight-lipped, but Sydney was good at reading people, and she could tell that it probably wasn't as complicated as Sienna claimed. She still liked him, he still liked her, big fucking news. Rather than act bothered, though, Sydney just smiled when Sienna insisted they'd be the first to know.
If Sydney wasn't already feeling low on patience with Jane, she hit that point when the girl insinuated that she had something to apologize to Sienna about. Of course, Sydney did. She slept with Vincent, and yes, that was very wrong, but Sienna was the one who tried to destroy her image. Wasn't that worse? Sydney thought so, and it took a lot of restraint for her to not berate Jane right there. On the surface, it was annoying because Sydney didn't think she was wrong, but additionally, she disliked how Jane was on Sienna's side. Whether it was intentional or not, or whether Jane realized it or not, that line insisted that she was taking Sia's side. Sydney wanted to believe that now they could put all of it behind them, but that was too idealistic. She wasn't stupid, and while she was glad to be where she was with Sienna, she knew that that book wasn't closed for good. It did bother her, though, that after all of the convincing she had felt she had done with Jane, that the brunette was still siding with Sienna. Did she not understand how vicious Sienna had been when making that post... or when making Victoria make that post? Sydney wanted to snap, but she didn't. She only met Jane's curious, innocent and somewhat distracted glance with a longer, pensive look, before saying, "We worked things out." It didn't answer the question directly, but Sydney didn't even think that Jane was still listening, as a second later, she was handing her a glass of champagne and talking about getting drunk.
It was something that she knew would never happen, but with Jane just admitting that she used drugs, Sydney wanted to insist that her friend stop drinking all together as well. She had learned that conversing with Jane was impossible tonight, though, and she wasn't going to make a scene. No, Sydney was going to continue her act of seeming bored and disinterested in Sienna's party, and she'd keep it up at Piper's lackluster affair, until she snapped and confronted Tori, or Jane, or Brent. "Maybe," and a shrug was all that Sydney responded to the question with. She left it at that, because then Sienna was toasting to the night and Sydney kept her mouth shut. A minimal smile remained on her face as she raised her glass, and while she emptied it like the rest of them, she really had no intentions of getting drunk. There was a difference between hitting a level of being buzzed and getting drunk. The first was going to be necessary to survive the night, but the latter would be dangerous and unhealthy for her in more ways that one. Sydney didn't typically get drunk to a point where she was inebriated. It defied her need for control, and she found that being so out of control and all of over the place looked trashy in others, so she didn't want to look that way herself. It didn't fit the classy image that she strived for. Besides, even if she did want to get drunk, she couldn't do it with Jane, because Jane was going to get way too drunk, like always, and Sydney couldn't be that drunk at the same time if she was expected to take care of her friend.